Fixes #2156 make controls visible #3237
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Description
Fixes the a11y issue in #2156, where keyboard and screen reader users lose control focus when the control bar hides due to inactivity. I set the controls to
visibility: visible
and tested with NVDA and JAWS across all supported browsers.For IE8, I opted to keep the controls hidden because
-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
won't make all of the children transparent. More work could be done on the controls for IE8, if someone can make a compelling case for it.